:root{
  --violet:#6c55e8;--violet-dark:#4934bd;--blue:#2f8cff;--cyan:#35dbc2;--yellow:#ffd166;
  --coral:#ff6f61;--pink:#ff70ac;--ink:#18252a;--board:#223238;--board-deep:#172328;
  --text:#fffdf7;--dark-text:#20272a;--muted:#b8c5c8;--green:#62e2a2;--danger:#ff7f82;
  --shadow:0 18px 42px rgba(32,22,94,.28);
  --match-length:clamp(56px,15.3vw,76px);--match-cross:clamp(22px,5.25vw,26px);
  --match-head-long:clamp(9px,2.22vw,11px);--match-head-short:clamp(6px,1.41vw,7px);
  --glyph-width:clamp(64px,17.7vw,88px);--glyph-height:clamp(108px,29.2vw,145px)
}
*{box-sizing:border-box}
html,body{width:100%;height:100%;overflow:hidden}
body{
  margin:0;color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;
  background:
    radial-gradient(circle at 8% 4%,rgba(255,209,102,.92) 0 10%,transparent 29%),
    radial-gradient(circle at 96% 16%,rgba(255,112,172,.82) 0 8%,transparent 29%),
    radial-gradient(circle at 70% 100%,rgba(53,219,194,.78) 0 13%,transparent 34%),
    linear-gradient(155deg,#7958ed 0%,#5373ed 48%,#2fa8da 100%);
  overscroll-behavior:none
}
button{font:inherit;-webkit-tap-highlight-color:transparent}
button:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}
[hidden]{display:none!important}
.app-shell{position:relative;width:min(100%,520px);height:100vh;height:100dvh;margin:0 auto;isolation:isolate}
.app-shell::before,.app-shell::after{content:"";position:absolute;border-radius:50%;filter:blur(2px);opacity:.35;z-index:-1}
.app-shell::before{width:180px;height:180px;left:-90px;bottom:8%;background:#ffd166}
.app-shell::after{width:160px;height:160px;right:-85px;top:25%;background:#ff70ac}
.screen{position:absolute;inset:0;display:flex;flex-direction:column;min-height:0;padding:calc(11px + env(safe-area-inset-top)) 12px calc(11px + env(safe-area-inset-bottom));overflow:hidden}

/* Home */
.home-screen{gap:8px}
.home-header{min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 2px}
.eyebrow{margin:0 0 1px;color:var(--yellow);font-size:.66rem;font-weight:900;letter-spacing:.22em;text-shadow:0 2px 8px rgba(0,0,0,.18)}
h1{margin:0;font-size:clamp(1.35rem,6vw,1.8rem);line-height:1.05;letter-spacing:-.025em;text-shadow:0 3px 12px rgba(36,23,103,.3)}
.attempt-chip{height:45px;min-width:77px;padding:0 10px;border:1px solid rgba(255,255,255,.34);border-radius:16px;background:rgba(255,255,255,.19);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;gap:5px;box-shadow:inset 0 1px rgba(255,255,255,.28)}
.attempt-chip span{color:#ff597f;font-size:1rem;filter:drop-shadow(0 2px 2px rgba(0,0,0,.18))}.attempt-chip strong{font-size:1.15rem}.attempt-chip small{font-size:.61rem;color:rgba(255,255,255,.78)}
.attempt-chip.compact{height:38px;min-width:58px;border-radius:13px;padding:0 9px}.attempt-chip.compact strong{font-size:1rem}
.progress-card{min-height:78px;border:1px solid rgba(255,255,255,.34);border-radius:21px;padding:12px 14px;background:linear-gradient(135deg,rgba(255,255,255,.25),rgba(255,255,255,.12));backdrop-filter:blur(14px);display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow),inset 0 1px rgba(255,255,255,.28)}
.progress-card>div:first-child{display:grid;gap:1px}.progress-label{font-size:.65rem;color:rgba(255,255,255,.78);font-weight:750}.progress-card strong{font-size:1.05rem}.progress-card small{font-size:.67rem;color:rgba(255,255,255,.76)}
.progress-ring{--progress:0deg;width:54px;height:54px;flex:0 0 54px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--yellow) var(--progress),rgba(255,255,255,.2) 0);position:relative;box-shadow:0 7px 18px rgba(41,29,115,.22)}
.progress-ring::before{content:"";position:absolute;inset:6px;border-radius:50%;background:#6559da}.progress-ring span{position:relative;font-size:.67rem;font-weight:900}
.reward-btn{min-height:49px;border:0;border-radius:17px;padding:8px 13px;background:linear-gradient(135deg,#ffd869,#ffb13b);color:#392c16;display:flex;align-items:center;gap:11px;text-align:left;box-shadow:0 10px 22px rgba(98,55,12,.22);cursor:pointer}
.reward-btn:active,.hint-reward-btn:active,.dialog-primary:active{transform:scale(.98)}
.reward-icon{width:32px;height:32px;border-radius:11px;background:#ff6f61;color:white;display:grid;place-items:center;font-size:.74rem;box-shadow:0 5px 12px rgba(175,53,45,.24)}
.reward-btn>span:last-child{display:grid}.reward-btn strong{font-size:.78rem}.reward-btn small{font-size:.59rem;color:#69501f;margin-top:1px}
.levels-panel{flex:1;min-height:0;border:1px solid rgba(255,255,255,.34);border-radius:23px;padding:10px;background:rgba(31,40,111,.26);backdrop-filter:blur(16px);display:flex;flex-direction:column;gap:7px;box-shadow:var(--shadow),inset 0 1px rgba(255,255,255,.2)}
.levels-heading{height:37px;flex:0 0 37px;display:flex;align-items:center;justify-content:space-between;padding:0 3px}.section-kicker{display:block;font-size:.56rem;color:var(--yellow);font-weight:850;letter-spacing:.08em}.levels-heading h2{margin:0;font-size:.98rem;line-height:1.05}.lock-note{font-size:.58rem;color:rgba(255,255,255,.7)}
.level-grid{flex:1;min-height:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(5,minmax(0,1fr));gap:6px}
.level-card{min-width:0;min-height:0;border:1px solid rgba(255,255,255,.22);border-radius:13px;padding:5px 8px;background:rgba(255,255,255,.14);color:white;display:flex;align-items:center;gap:8px;text-align:left;cursor:pointer;transition:.16s ease;box-shadow:inset 0 1px rgba(255,255,255,.12)}
.level-card:active{transform:scale(.97)}.level-card.current{border-color:var(--yellow);background:linear-gradient(135deg,rgba(255,209,102,.35),rgba(255,255,255,.16));box-shadow:0 0 0 2px rgba(255,209,102,.15)}
.level-card.completed{background:rgba(53,219,194,.2);border-color:rgba(118,255,220,.43)}.level-card.locked{opacity:.47;background:rgba(26,30,73,.25);cursor:not-allowed}
.level-state{width:26px;height:26px;flex:0 0 26px;border-radius:9px;background:rgba(255,255,255,.17);display:grid;place-items:center;font-size:.69rem}.completed .level-state{background:var(--cyan);color:#173f3a;font-weight:900}.current .level-state{background:var(--yellow);color:#513e14}
.level-copy{min-width:0;display:grid}.level-copy strong{font-size:.72rem;line-height:1.1}.level-copy small{font-size:.57rem;color:rgba(255,255,255,.7);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.pager{height:35px;flex:0 0 35px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:8px}.pager button{height:33px;border:0;border-radius:11px;background:rgba(255,255,255,.15);color:white;font-size:.65rem;font-weight:750;cursor:pointer}.pager button:disabled{opacity:.32}.pager span{font-size:.62rem;color:rgba(255,255,255,.78);font-weight:800}

/* Play */
.play-screen{gap:7px}
.play-header{height:47px;flex:0 0 47px;display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:7px}
.icon-btn{width:39px;height:39px;border:1px solid rgba(255,255,255,.32);border-radius:13px;background:rgba(255,255,255,.17);color:white;font-size:1.35rem;line-height:1;display:grid;place-items:center;cursor:pointer;box-shadow:inset 0 1px rgba(255,255,255,.2)}
.play-title{text-align:center;display:flex;align-items:baseline;justify-content:center;gap:5px}.play-title span{font-size:.66rem;color:rgba(255,255,255,.78)}.play-title strong{font-size:1.2rem}.play-tools{display:flex;align-items:center;gap:6px}
.play-instruction{height:34px;flex:0 0 34px;border:1px solid rgba(255,255,255,.27);border-radius:14px;background:rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;gap:7px;padding:0 10px}.play-instruction p{margin:0;font-size:.72rem}.instruction-dot{width:8px;height:8px;border-radius:50%;background:var(--yellow);box-shadow:0 0 0 4px rgba(255,209,102,.18)}
.puzzle-board{flex:1;min-height:0;border:1px solid #476067;border-radius:23px;background:radial-gradient(circle at 50% 38%,#2d4148 0,#223238 58%,#172328 100%);box-shadow:0 18px 38px rgba(21,28,68,.34),inset 0 1px rgba(255,255,255,.07);display:flex;flex-direction:column;align-items:stretch;justify-content:center;overflow:hidden;padding:9px 7px 8px;transition:.18s ease}
.puzzle-board.wrong{animation:wrongShake .34s ease;border-color:var(--danger)}
@keyframes wrongShake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}50%{transform:translateX(6px)}75%{transform:translateX(-3px)}}
.equation{flex:1;min-height:0;display:flex;justify-content:center;align-items:center;gap:clamp(2px,.9vw,5px);touch-action:none;user-select:none}
.drag-tip{height:27px;flex:0 0 27px;margin:0 5px;border-top:1px dashed rgba(255,255,255,.16);display:flex;align-items:flex-end;justify-content:center;gap:5px;color:#9fb0b4;font-size:.61rem}.drag-tip span{font-size:.8rem}
.glyph{position:relative;width:var(--glyph-width);height:var(--glyph-height);flex:0 0 auto}.glyph.operator{width:var(--match-length)}
.segment{position:absolute;border:0;padding:0;margin:0;background:transparent;cursor:grab;z-index:1}.segment:active{cursor:grabbing}
.segment::before{content:"";position:absolute;border-radius:999px;background:rgba(72,98,106,.42);box-shadow:inset 0 0 0 1px rgba(255,255,255,.018);transition:.14s ease}
.segment.horizontal{width:var(--match-length);height:var(--match-cross);left:50%;transform:translateX(-50%)}.segment.vertical{width:var(--match-cross);height:var(--match-length)}
.segment.horizontal::before{left:4px;right:4px;top:50%;height:4px;transform:translateY(-50%)}.segment.vertical::before{top:4px;bottom:4px;left:50%;width:4px;transform:translateX(-50%)}
.segment[data-seg="a"]{top:0}.segment[data-seg="g"]{top:50%;transform:translate(-50%,-50%)}.segment[data-seg="d"]{bottom:0}.segment[data-seg="f"]{top:6%;left:-3px}.segment[data-seg="b"]{top:6%;right:-3px}.segment[data-seg="e"]{bottom:6%;left:-3px}.segment[data-seg="c"]{bottom:6%;right:-3px}
.operator .segment[data-seg="h"]{top:50%;left:50%;transform:translate(-50%,-50%)}.operator .segment[data-seg="i"]{top:62%;left:50%;transform:translate(-50%,-50%)}
.segment.active::before{border:1px solid rgba(111,82,47,.38);box-shadow:0 4px 4px rgba(0,0,0,.48),0 1px 1px rgba(0,0,0,.3),inset 0 1px rgba(255,250,224,.88),inset 0 -1px rgba(112,78,39,.26)}
.segment.horizontal.active::before{background:linear-gradient(180deg,rgba(123,88,44,.28),rgba(255,248,218,.76) 32%,rgba(240,218,175,.35) 70%,rgba(116,79,38,.26)),repeating-linear-gradient(90deg,#d2ae72 0 1px,#f2ddb0 2px 10px,#e1c38f 11px 15px,#f7e7bd 16px 22px);clip-path:polygon(0 34%,3% 12%,12% 3%,88% 3%,97% 18%,100% 50%,97% 82%,88% 97%,12% 97%,3% 86%)}
.segment.vertical.active::before{background:linear-gradient(90deg,rgba(123,88,44,.28),rgba(255,248,218,.76) 32%,rgba(240,218,175,.35) 70%,rgba(116,79,38,.26)),repeating-linear-gradient(0deg,#d2ae72 0 1px,#f2ddb0 2px 10px,#e1c38f 11px 15px,#f7e7bd 16px 22px);clip-path:polygon(34% 0,66% 0,90% 3%,98% 10%,98% 90%,86% 97%,50% 100%,14% 97%,2% 90%,2% 10%,10% 3%)}
.segment.active::after{content:"";position:absolute;z-index:2;border-radius:48% 52% 48% 54% / 52% 48% 56% 44%;background:radial-gradient(circle at 31% 24%,rgba(255,190,173,.72) 0 7%,transparent 9%),linear-gradient(135deg,#f36b63 0%,#df4443 42%,#bd292f 76%,#8d1c24 100%);border:1px solid rgba(112,24,27,.48);box-shadow:0 3px 3px rgba(0,0,0,.48),inset 1px 1px 2px rgba(255,174,155,.38),inset -1px -2px 2px rgba(92,15,22,.28)}
.segment.horizontal.active::after{width:var(--match-head-long);height:var(--match-head-short);right:1px;top:50%;transform:translateY(-50%) rotate(2deg)}
.glyph:not(.operator) .segment.horizontal.active[data-seg="a"]::after,.glyph:not(.operator) .segment.horizontal.active[data-seg="g"]::after{left:1%;right:auto;transform:translateY(-50%) rotate(-2deg)}
.segment.vertical.active::after{width:var(--match-head-short);height:var(--match-head-long);left:50%;top:1px;bottom:auto;transform:translateX(-50%) rotate(-2deg)}
.segment.drop-target::before{background:var(--yellow);box-shadow:0 0 0 2px rgba(255,209,102,.42),0 0 18px rgba(255,209,102,.45)}
.feedback{height:31px;flex:0 0 31px;margin:0;display:flex;align-items:center;justify-content:center;text-align:center;color:rgba(255,255,255,.82);font-size:.67rem;line-height:1.2;overflow:hidden}.feedback.success{color:#c5ffe2;font-weight:800}.feedback.error{color:#fff1f1;font-weight:750}.feedback.hint{color:#fff3b7;font-weight:750}
.hint-reward-btn{height:47px;flex:0 0 47px;border:1px solid rgba(255,255,255,.34);border-radius:16px;background:rgba(255,255,255,.18);color:white;display:flex;align-items:center;justify-content:center;gap:8px;font-size:.73rem;cursor:pointer;box-shadow:inset 0 1px rgba(255,255,255,.2)}

/* Dialogs and rewarded-ad shell */
.overlay{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:20px;background:rgba(21,21,50,.66);backdrop-filter:blur(9px)}
.dialog-card{width:min(100%,350px);border:1px solid rgba(255,255,255,.35);border-radius:26px;padding:20px;background:linear-gradient(155deg,#fff 0,#f6f2ff 100%);color:var(--dark-text);text-align:center;box-shadow:0 28px 70px rgba(25,17,76,.4)}
.dialog-icon{width:52px;height:52px;margin:0 auto 9px;border-radius:17px;background:linear-gradient(135deg,#ff826e,#ff5c91);color:white;display:grid;place-items:center;font-size:1rem;box-shadow:0 10px 24px rgba(221,69,94,.28)}.dialog-icon.heart{font-size:1.4rem}.dialog-kicker{margin:0 0 3px;color:#6953d5;font-size:.64rem;font-weight:900;letter-spacing:.1em}.dialog-card h2{margin:0;font-size:1.23rem}.dialog-card>p:not(.dialog-kicker){margin:8px auto 15px;color:#667174;font-size:.76rem;line-height:1.5;max-width:280px}
.dialog-primary,.dialog-secondary{width:100%;min-height:47px;border:0;border-radius:15px;font-weight:850;cursor:pointer}.dialog-primary{background:linear-gradient(135deg,#ffd166,#ffae39);color:#3b2e18;box-shadow:0 9px 20px rgba(187,112,25,.2)}.dialog-secondary{margin-top:8px;background:#ebeaf2;color:#667074}.dialog-primary:disabled{opacity:.55}
.mock-ad-status{height:92px;margin:10px 0 14px;border-radius:16px;background:linear-gradient(135deg,#6652df,#358ddf);color:white;display:grid;place-content:center;gap:2px}.mock-ad-status span{font-size:.66rem;opacity:.8}.mock-ad-status strong{font-size:2rem}.win-stars{color:#ffb637;font-size:1.35rem;margin-bottom:8px;letter-spacing:.12em}.win-dialog{background:linear-gradient(155deg,#f7fff9,#fff7d7)}
.toast{position:fixed;left:50%;bottom:calc(18px + env(safe-area-inset-bottom));transform:translate(-50%,24px);max-width:calc(100% - 28px);background:#172328;color:white;border:1px solid #51666d;border-radius:13px;padding:10px 15px;font-size:.7rem;opacity:0;pointer-events:none;transition:.22s;z-index:400;box-shadow:0 12px 30px rgba(0,0,0,.3);white-space:nowrap}.toast.show{opacity:1;transform:translate(-50%,0)}
.drag-ghost{position:fixed;width:var(--match-length);height:var(--match-cross);pointer-events:none;z-index:300;display:none;transform:translate(-50%,-50%) rotate(-7deg);filter:drop-shadow(0 6px 5px rgba(0,0,0,.34))}.drag-ghost.vertical{transform:translate(-50%,-50%) rotate(83deg)}.drag-ghost i{position:absolute;inset:0}.drag-ghost i::before{content:"";position:absolute;left:4px;right:4px;top:50%;height:4px;transform:translateY(-50%);border-radius:99px;background:linear-gradient(180deg,#b58a50,#f4dfb3 34%,#e2c28a 74%,#9f713d);box-shadow:0 3px 3px rgba(0,0,0,.46),inset 0 1px rgba(255,250,224,.8);clip-path:polygon(0 34%,3% 12%,12% 3%,88% 3%,97% 18%,100% 50%,97% 82%,88% 97%,12% 97%,3% 86%)}.drag-ghost i::after{content:"";position:absolute;right:1px;top:50%;width:var(--match-head-long);height:var(--match-head-short);transform:translateY(-50%) rotate(2deg);border-radius:50%;background:linear-gradient(135deg,#f36b63,#c82e34 70%,#8d1c24);box-shadow:0 3px 3px rgba(0,0,0,.46),inset 1px 1px rgba(255,181,165,.38)}.drag-ghost.show{display:block}

@media(min-width:600px){
  .app-shell{width:min(100%,560px)}.screen{padding-left:18px;padding-right:18px}
}
@media(max-height:620px){
  .screen{padding-top:calc(7px + env(safe-area-inset-top));padding-bottom:calc(7px + env(safe-area-inset-bottom))}.home-screen,.play-screen{gap:5px}.home-header{min-height:45px}.progress-card{min-height:68px;padding:8px 12px}.progress-ring{width:48px;height:48px;flex-basis:48px}.reward-btn{min-height:44px}.levels-panel{padding:8px;gap:5px}.levels-heading{height:31px;flex-basis:31px}.pager{height:31px;flex-basis:31px}.pager button{height:29px}.play-header{height:42px;flex-basis:42px}.play-instruction{height:30px;flex-basis:30px}.hint-reward-btn{height:43px;flex-basis:43px}.feedback{height:27px;flex-basis:27px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}